i had a guy try and sell me one of these by doing that stupid test holding your arms down. then i turned around and did the same test to my mate with no stupid plastic band, same result. So many consumers are being conned into buying this product.

Edit: there's a good australian news report on youtube somewhere explaining how they are a con. Just beware they are all the same product, Trion-Z, Powerbalance, EFX Power Band and theres probably many others.